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Vapor rises from a melting crucible filled with molten gold jewelry before an employee pours it into an ingot mold during gold bar production at Oegussa GmbH's gold and silver separating plant, a unit of Umicore SA, in Vienna, Austria, on Friday, Jan. 16, 2015. The Swiss central bank's surprise move to abandon the franc's cap against the euro sent investors rushing to gold as a haven from swings in currencies. Photographer: Lisi Niesner/Bloomberg via Getty Images

Vapor rises from a melting crucible filled with molten gold jewelry before an employee pours it into an ingot mold during gold bar production at Oegussa GmbH's gold and silver separating plant, a unit of Umicore SA, in Vienna, Austria, on Friday, Jan. 16, 2015. The Swiss central bank's surprise move to abandon the franc's cap against the euro sent investors rushing to gold as a haven from swings in currencies. Photographer: Lisi Niesner/Bloomberg via Getty Images